P.2.1 chip features – Cirrus Logic CS4970x4 User Manual
Page 13
P-2
Copyright 2013 Cirrus Logic, Inc.
DS810UM6
Overview of the CS4953x4/CS4970x4 DSP
CS4953x4/CS4970x4 System Designer’s Guide
P.2.1 Chip Features
The CS4953x4/CS4970x4 include the following features:
illustrates the functional block diagram for the CS4953x4/CS4970x4 DSPs.
Figure P-1. CS4970x4 Chip Functional Block Diagram
•
Various Decoding/processing Standards
•
Customer Software Security Keys
•
12-channel Serial Audio Inputs
•
16-channel PCM Output
•
Dual 32-bit Audio DSP with Dual MAC
•
Dual S/PDIF Transmitters
•
Large On-chip X,Y, and Program RAM
•
Two Serial Control Ports Using SPI
™
or I
2
C
™
Standards
•
Supports SDRAM Memory
•
Digital Audio Input (DAI) Port for Audio Data Delivery
in I
2
S or LJ Format
•
Parallel Control Using Motorola
®
or
Intel
®
Communication Standards
•
GPIO Support for All Common Sub-circuits
DAI
Controller
DMA Controller with 11 Stereo Channels
Programmable
Interrupt Controller
Peripheral
Bus
Controller
Me
mo
ry C
ontro
lle
r
Log/Exp
Security
Ext (64 bit)
DMA Bus
Peripheral Bus
Decryptor
32-bit Dual Datapath
DSP
with 72-bit
Accumulators
X
Y
P
X
P
Y
64 bit
Stereo Audio Output
Stereo Audio Output
Stereo Audio Output
Ar
bi
te
r
Ar
bit
e
r
Stereo Audio Output or
SPDIF Transmitter
DAO
Controller
ROM
SRAM
ROM
SRAM
ROM
SRAM
Timers
GPIOs
Clock Manager and PLL
Parallel Control Port
Serial Control Port
S
DRAM
C
o
n
tr
o
lle
r
SR
AM /
FL
A
S
H Con
tro
ller
Debug
Controller
DSPA
DSPB
DAO1
Stereo Audio Input/DSD
Stereo Audio Input/DSD
Stereo Audio Input/DSD
Stereo Audio Input/DSD
Stereo Audio Output
Stereo Audio Output
Stereo Audio Output
Stereo Audio Output or
SPDIF Transmitter
DAO
Controller
DAO2
DAI1
CS49700x
Stereo Audio Input /
Bursty Data Input/DSD
Stereo Audio Input/DSD
DAI2
DAI
Controller